<template>
  <div class="file-upload">
    <div
      class="demo-upload-list"
      v-for="(item,index) in uploadList"
      :key="index+'upload'"
    >
      <template v-if="item.status === 'finished'">
        <img :src="item.url">
        <div class="demo-upload-list-cover">
          <Icon
            type="ios-eye-outline"
            @click.native="handleView(item.name)"
          ></Icon>
          <Icon
            type="ios-trash-outline"
            @click.native="handleRemove(item)"
          ></Icon>
        </div>
      </template>
      <template v-else>
        <Progress
          v-if="item.showProgress"
          :percent="item.percentage"
          hide-info
        ></Progress>
      </template>
    </div>
    <Upload
      ref="upload"
      :show-upload-list="false"
      :default-file-list="defaultList"
      :on-success="handleSuccess"
      :format="['jpg','jpeg','png']"
      :max-size="2048"
      :on-format-error="handleFormatError"
      :on-exceeded-size="handleMaxSize"
      :before-upload="handleBeforeUpload"
      multiple
      type="drag"
      action="/fileUpload/upload"
      style="display: inline-block;width:58px;"
    >
      <div style="width: 58px;height:58px;line-height: 58px;">
        <Icon
          type="ios-camera"
          size="20"
        ></Icon>
      </div>
    </Upload>
    <Modal
      title="View Image"
      v-model="visible"
    >
      <img
        :src="'https://o5wwk8baw.qnssl.com/' + imgName + '/large'"
        v-if="visible"
        style="width: 100%"
      />
    </Modal>
  </div>
</template>
<script>
export default {
  data () {
    return {
      defaultList: [
        {
          'name': 'a42bdcc1178e62b4694c830f028db5c0',
          'url': 'https://o5wwk8baw.qnssl.com/a42bdcc1178e62b4694c830f028db5c0/avatar'
        },
        {
          'name': 'bc7521e033abdd1e92222d733590f104',
          'url': 'https://o5wwk8baw.qnssl.com/bc7521e033abdd1e92222d733590f104/avatar'
        }
      ],
      imgName: '',
      visible: false,
      uploadList: []
    }
  },
  methods: {
    handleView (name) {
      this.imgName = name;
      this.visible = true;
    },
    handleRemove (file) {
      const fileList = this.$refs.upload.fileList;
      this.$refs.upload.fileList.splice(fileList.indexOf(file), 1);
    },
    handleSuccess (res, file) {
      file.url = 'https://o5wwk8baw.qnssl.com/7eb99afb9d5f317c912f08b5212fd69a/avatar';
      file.name = '7eb99afb9d5f317c912f08b5212fd69a';
    },
    handleFormatError (file) {
      this.$Notice.warning({
        title: 'The file format is incorrect',
        desc: 'File format of ' + file.name + ' is incorrect, please select jpg or png.'
      });
    },
    handleMaxSize (file) {
      this.$Notice.warning({
        title: 'Exceeding file size limit',
        desc: 'File  ' + file.name + ' is too large, no more than 2M.'
      });
    },
    handleBeforeUpload () {
      const check = this.uploadList.length < 5;
      if (!check) {
        this.$Notice.warning({
          title: 'Up to five pictures can be uploaded.'
        });
      }
      return check;
    }
  },
  mounted () {
    this.uploadList = this.$refs.upload.fileList;
  }
}
</script>
<style>
.demo-upload-list {
  display: inline-block;
  width: 60px;
  height: 60px;
  text-align: center;
  line-height: 60px;
  border: 1px solid transparent;
  border-radius: 4px;
  overflow: hidden;
  background: #fff;
  position: relative;
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
  margin-right: 4px;
}
.demo-upload-list img {
  width: 100%;
  height: 100%;
}
.demo-upload-list-cover {
  display: none;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.6);
}
.demo-upload-list:hover .demo-upload-list-cover {
  display: block;
}
.demo-upload-list-cover i {
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  margin: 0 2px;
}
</style>